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Stream Elevation Sensor 1179
1180 Cypress Creek @ Katy-Hockley Road
Sensor ID 1179
Sensor Type USGS Bubbler
Installed 1/18/1984
Flooding Likely 157.30'
Flooding Possible 154.30'
Bottom of Stream 145.00'
Tip of Orifice 145.06'
Measuring Plate 162.25'
External Link USGS
Water Level Forecast Information NWS
Benchmark 162.20'
RM 110190 stamped K100 BM15 located on the downstream sidewalk at stream centerline, 1988 NAVD, 2001 adjustment. 78 to 01 Adjustment -0.4'
As of July 1, 2007, the elevation datum was changed from 1929 NGVD, 1978 adjustment to the 1988 NAVD, 2001 adjustment.

The Stream Elevation chart showing Stream Elevation Left series.
Cross Section
Stream Elevation for sensor 1179 is 145.33'
Reading on 9/10/2025 3:27 PM
Export to Excel
2 Days
Sensor
Reading Date
Elevation
11799/10/2025 3:27 PM145.33'
11799/10/2025 11:27 AM145.35'
11799/10/2025 7:27 AM145.38'
11799/10/2025 3:27 AM145.39'
11799/9/2025 11:27 PM145.40'
11799/9/2025 7:41 PM145.40'
11799/9/2025 7:27 PM145.39'
11799/9/2025 3:27 PM145.27'
11799/9/2025 11:27 AM145.30'
11799/9/2025 10:55 AM145.29'
11799/9/2025 7:27 AM145.32'
11799/9/2025 3:27 AM145.34'
11799/8/2025 11:27 PM145.37'
11799/8/2025 7:27 PM145.39'
Flood Frequency
Elevation
10% (10-year)161.50'
2% (50-year)162.50'
1% (100-year)162.90'
.2% (500-year)164.00'
Historical Storm
Date
Event
Elevation
1/19/1979 160.50'
2/6/1979 157.60'
5/21/1983 160.80'
8/18/1983Alicia152.70'
10/18/1994 163.00'
10/19/1998 162.90'
11/14/1998 161.30'
6/9/2001Allison #2160.60'
4/28/2009 159.90'
7/12/2012 159.80'
4/18/2016 162.30'
5/27/2016 160.50'
8/27/2017Harvey162.80'
High water mark elevations are approximate.
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